Facilitation of user equipment specific compression of beamforming coefficients for fronthaul links for 5g or other next generation network

ABSTRACT

Precoding coefficients can be compressed based on user equipment signal interference to noise ratio or path loss in front haul cloud radio access network systems. For example, a baseband unit can compute a precoder matrix from an estimated channel associated with an uplink signal. Once the baseband unit computes the channel, it can determine the coefficients for the linear combination of the basis vectors, which are known at the baseband unit and the radio unit as well. The baseband unit can estimate the path loss and the signal interference to noise ratio and determine the basis vectors. The baseband unit can then compress the coefficients and transmit the coefficients to the radio unit. When the radio unit receives the compressed coefficients, the radio unit can reconstruct the precoder matrix and apply to reference signals and data traffic channels.

RELATED APPLICATION

The subject patent application is a continuation of, and claims priorityto each of, U.S. patent application Ser. No. 16/421,586, filed May 24,2019, and entitled “FACILITATION OF USER EQUIPMENT SPECIFIC COMPRESSIONOF BEAMFORMING COEFFICIENTS FOR FRONTHAUL LINKS FOR 5G OR OTHER NEXTGENERATION NETWORK,” which is a continuation of U.S. patent applicationSer. No. 16/059,680 (now U.S. Pat. No. 10,348,386), filed Aug. 9, 2018,and entitled “FACILITATION OF USER EQUIPMENT SPECIFIC COMPRESSION OFBEAMFORMING COEFFICIENTS FOR FRONTHAUL LINKS FOR 5G OR OTHER NEXTGENERATION NETWORK,” the entireties of which applications are herebyincorporated by reference herein.

TECHNICAL FIELD

This disclosure relates generally to facilitating user equipmentspecific compression for beamforming coefficients. For example, thisdisclosure relates to facilitating user equipment specific compressionfor beamforming coefficients based on signal interference to noiseratios and or path loss for a 5G, or other next generation network, airinterface.

BACKGROUND

5th generation (5G) wireless systems represent a next major phase ofmobile telecommunications standards beyond the currenttelecommunications standards of 4^(th) generation (4G). Rather thanfaster peak Internet connection speeds, 5G planning aims at highercapacity than current 4G, allowing a higher number of mobile broadbandusers per area unit, and allowing consumption of higher or unlimiteddata quantities. This would enable a large portion of the population tostream high-definition media many hours per day with their mobiledevices, when out of reach of wireless fidelity hotspots. 5G researchand development also aims at improved support of machine-to-machinecommunication, also known as the Internet of things, aiming at lowercost, lower battery consumption, and lower latency than 4G equipment.

The above-described background relating to facilitating user equipmentspecific compression for beamforming coefficients is merely intended toprovide a contextual overview of some current issues, and is notintended to be exhaustive. Other contextual information may becomefurther apparent upon review of the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

Non-limiting and non-exhaustive embodiments of the subject disclosureare described with reference to the following figures, wherein likereference numerals refer to like parts throughout the various viewsunless otherwise specified.

FIG. 1 illustrates an example wireless communication system in which anetwork node device (e.g., network node) and user equipment (UE) canimplement various aspects and embodiments of the subject disclosure.

FIG. 2 illustrates an example schematic system block diagram of amessage sequence chart between a network node and user equipmentaccording to one or more embodiments.

FIG. 3 illustrates an example schematic system block diagram of apassive antenna array according to one or more embodiments.

FIG. 4 illustrates an example schematic system block diagram of anactive antenna array according to one or more embodiments.

FIG. 5 illustrates an example schematic system block diagram of anantenna array for hybrid beamforming according to one or moreembodiments.

FIG. 6 illustrates an example schematic system block diagram of a cloudradio access network architecture according to one or more embodiments.

FIG. 7 illustrates an example schematic system block diagram of splitoptions for fronthaul according to one or more embodiments.

FIG. 8 illustrates an example spectral efficiency graph according to oneor more embodiments.

FIG. 9 illustrates an example schematic system block diagram ofmulti-stage representation of massive multiple-in multiple-out precodingaccording to one or more embodiments.

FIG. 10 illustrates an example flow diagram for a method forfacilitating user equipment specific compression of beamformingcoefficients for a 5G network according to one or more embodiments.

FIG. 11 illustrates an example flow diagram for a system forfacilitating user equipment specific compression of beamformingcoefficients for a 5G network according to one or more embodiments.

FIG. 12 illustrates an example flow diagram for a computer-readablemedium for facilitating user equipment specific compression ofbeamforming coefficients for a 5G network according to one or moreembodiments.

FIG. 13 illustrates an example block diagram of an example mobilehandset operable to engage in a system architecture that facilitatessecure wireless communication according to one or more embodimentsdescribed herein.

FIG. 14 illustrates an example block diagram of an example computeroperable to engage in a system architecture that facilitates securewireless communication according to one or more embodiments describedherein.

DETAILED DESCRIPTION

In the following description, numerous specific details are set forth toprovide a thorough understanding of various embodiments. One skilled inthe relevant art will recognize, however, that the techniques describedherein can be practiced without one or more of the specific details, orwith other methods, components, materials, etc. In other instances,well-known structures, materials, or operations are not shown ordescribed in detail to avoid obscuring certain aspects.

Reference throughout this specification to “one embodiment,” or “anembodiment,” means that a particular feature, structure, orcharacteristic described in connection with the embodiment is includedin at least one embodiment. Thus, the appearances of the phrase “in oneembodiment,” “in one aspect,” or “in an embodiment,” in various placesthroughout this specification are not necessarily all referring to thesame embodiment. Furthermore, the particular features, structures, orcharacteristics may be combined in any suitable manner in one or moreembodiments.

As utilized herein, terms “component,” “system,” “interface,” and thelike are intended to refer to a computer-related entity, hardware,software (e.g., in execution), and/or firmware. For example, a componentcan be a processor, a process running on a processor, an object, anexecutable, a program, a storage device, and/or a computer. By way ofillustration, an application running on a server and the server can be acomponent. One or more components can reside within a process, and acomponent can be localized on one computer and/or distributed betweentwo or more computers.

Further, these components can execute from various machine-readablemedia having various data structures stored thereon. The components cancommunicate via local and/or remote processes such as in accordance witha signal having one or more data packets (e.g., data from one componentinteracting with another component in a local system, distributedsystem, and/or across a network, e.g., the Internet, a local areanetwork, a wide area network, etc. with other systems via the signal).

As another example, a component can be an apparatus with specificfunctionality provided by mechanical parts operated by electric orelectronic circuitry; the electric or electronic circuitry can beoperated by a software application or a firmware application executed byone or more processors; the one or more processors can be internal orexternal to the apparatus and can execute at least a part of thesoftware or firmware application. As yet another example, a componentcan be an apparatus that provides specific functionality throughelectronic components without mechanical parts; the electroniccomponents can include one or more processors therein to executesoftware and/or firmware that confer(s), at least in part, thefunctionality of the electronic components. In an aspect, a componentcan emulate an electronic component via a virtual machine, e.g., withina cloud computing system.

The words “exemplary” and/or “demonstrative” are used herein to meanserving as an example, instance, or illustration. For the avoidance ofdoubt, the subject matter disclosed herein is not limited by suchexamples. In addition, any aspect or design described herein as“exemplary” and/or “demonstrative” is not necessarily to be construed aspreferred or advantageous over other aspects or designs, nor is it meantto preclude equivalent exemplary structures and techniques known tothose of ordinary skill in the art. Furthermore, to the extent that theterms “includes,” “has,” “contains,” and other similar words are used ineither the detailed description or the claims, such terms are intendedto be inclusive—in a manner similar to the term “comprising” as an opentransition word—without precluding any additional or other elements.

As used herein, the term “infer” or “inference” refers generally to theprocess of reasoning about, or inferring states of, the system,environment, user, and/or intent from a set of observations as capturedvia events and/or data. Captured data and events can include user data,device data, environment data, data from sensors, sensor data,application data, implicit data, explicit data, etc. Inference can beemployed to identify a specific context or action, or can generate aprobability distribution over states of interest based on aconsideration of data and events, for example.

Inference can also refer to techniques employed for composinghigher-level events from a set of events and/or data. Such inferenceresults in the construction of new events or actions from a set ofobserved events and/or stored event data, whether the events arecorrelated in close temporal proximity, and whether the events and datacome from one or several event and data sources. Various classificationschemes and/or systems (e.g., support vector machines, neural networks,expert systems, Bayesian belief networks, fuzzy logic, and data fusionengines) can be employed in connection with performing automatic and/orinferred action in connection with the disclosed subject matter.

In addition, the disclosed subject matter can be implemented as amethod, apparatus, or article of manufacture using standard programmingand/or engineering techniques to produce software, firmware, hardware,or any combination thereof to control a computer to implement thedisclosed subject matter. The term “article of manufacture” as usedherein is intended to encompass a computer program accessible from anycomputer-readable device, machine-readable device, computer-readablecarrier, computer-readable media, or machine-readable media. Forexample, computer-readable media can include, but are not limited to, amagnetic storage device, e.g., hard disk; floppy disk; magneticstrip(s); an optical disk (e.g., compact disk (CD), a digital video disc(DVD), a Blu-ray Disc™ (BD)); a smart card; a flash memory device (e.g.,card, stick, key drive); and/or a virtual device that emulates a storagedevice and/or any of the above computer-readable media.

As an overview, various embodiments are described herein to facilitateuser equipment specific compression for beamforming coefficients for a5G air interface or other next generation networks. For simplicity ofexplanation, the methods (or algorithms) are depicted and described as aseries of acts. It is to be understood and appreciated that the variousembodiments are not limited by the acts illustrated and/or by the orderof acts. For example, acts can occur in various orders and/orconcurrently, and with other acts not presented or described herein.Furthermore, not all illustrated acts may be required to implement themethods. In addition, the methods could alternatively be represented asa series of interrelated states via a state diagram or events.Additionally, the methods described hereafter are capable of beingstored on an article of manufacture (e.g., a machine-readable storagemedium) to facilitate transporting and transferring such methodologiesto computers. The term article of manufacture, as used herein, isintended to encompass a computer program accessible from anycomputer-readable device, carrier, or media, including a non-transitorymachine-readable storage medium.

It should be noted that although various aspects and embodiments havebeen described herein in the context of 5G, Universal MobileTelecommunications System (UMTS), and/or Long Term Evolution (LTE), orother next generation networks, the disclosed aspects are not limited to5G, a UMTS implementation, and/or an LTE implementation as thetechniques can also be applied in 3G, 4G or LTE systems. For example,aspects or features of the disclosed embodiments can be exploited insubstantially any wireless communication technology. Such wirelesscommunication technologies can include UMTS, Code Division MultipleAccess (CDMA), Wi-Fi, Worldwide Interoperability for Microwave Access(WiMAX), General Packet Radio Service (GPRS), Enhanced GPRS, ThirdGeneration Partnership Project (3GPP), LTE, Third Generation PartnershipProject 2 (3GPP2) Ultra Mobile Broadband (UMB), High Speed Packet Access(HSPA), Evolved High Speed Packet Access (HSPA+), High-Speed DownlinkPacket Access (HSDPA), High-Speed Uplink Packet Access (HSUPA), Zigbee,or another IEEE 802.XX technology. Additionally, substantially allaspects disclosed herein can be exploited in legacy telecommunicationtechnologies.

Described herein are systems, methods, articles of manufacture, andother embodiments or implementations that can facilitate user equipmentspecific compression for beamforming coefficients for a 5G network.Facilitating user equipment specific compression for a 5G network can beimplemented in connection with any type of device with a connection tothe communications network (e.g., a mobile handset, a computer, ahandheld device, etc.) any Internet of things (JOT) device (e.g.,toaster, coffee maker, blinds, music players, speakers, etc.), and/orany connected vehicles (cars, airplanes, space rockets, and/or other atleast partially automated vehicles (e.g., drones)). In some embodimentsthe non-limiting term user equipment (UE) is used. It can refer to anytype of wireless device that communicates with a radio network node in acellular or mobile communication system. Examples of UE are targetdevice, device to device (D2D) UE, machine type UE or UE capable ofmachine to machine (M2M) communication, PDA, Tablet, mobile terminals,smart phone, laptop embedded equipped (LEE), laptop mounted equipment(LME), USB dongles etc. Note that the terms element, elements andantenna ports can be interchangeably used but carry the same meaning inthis disclosure. The embodiments are applicable to single carrier aswell as to multicarrier (MC) or carrier aggregation (CA) operation ofthe UE. The term carrier aggregation (CA) is also called (e.g.interchangeably called) “multi-carrier system”, “multi-cell operation”,“multi-carrier operation”, “multi-carrier” transmission and/orreception.

In some embodiments the non-limiting term radio network node or simplynetwork node is used. It can refer to any type of network node thatserves UE is connected to other network nodes or network elements or anyradio node from where UE receives a signal. Examples of radio networknodes are Node B, base station (BS), multi-standard radio (MSR) nodesuch as MSR BS, eNode B, network controller, radio network controller(RNC), base station controller (BSC), relay, donor node controllingrelay, base transceiver station (BTS), access point (AP), transmissionpoints, transmission nodes, RRU, RRH, nodes in distributed antennasystem (DAS) etc.

Cloud radio access networks (RAN) can enable the implementation ofconcepts such as software-defined network (SDN) and network functionvirtualization (NFV) in 5G networks. This disclosure can facilitate ageneric channel state information framework design for a 5G network.Certain embodiments of this disclosure can comprise an SDN controllerthat can control routing of traffic within the network and between thenetwork and traffic destinations. The SDN controller can be merged withthe 5G network architecture to enable service deliveries via openapplication programming interfaces (“APIs”) and move the network coretowards an all internet protocol (“IP”), cloud based, and softwaredriven telecommunications network. The SDN controller can work with, ortake the place of policy and charging rules function (“PCRF”) networkelements so that policies such as quality of service and trafficmanagement and routing can be synchronized and managed end to end.

To meet the huge demand for data centric applications, 4G standards canbe applied 5G, also called new radio (NR) access. 5G networks cancomprise the following: data rates of several tens of megabits persecond supported for tens of thousands of users; 1 gigabit per secondcan be offered simultaneously to tens of workers on the same officefloor; several hundreds of thousands of simultaneous connections can besupported for massive sensor deployments; spectral efficiency can beenhanced compared to 4G; improved coverage; enhanced signalingefficiency; and reduced latency compared to LTE. In multicarrier systemsuch as OFDM, each subcarrier can occupy bandwidth (e.g., subcarrierspacing). If the carriers use the same bandwidth spacing, then it can beconsidered a single numerology. However, if the carriers occupydifferent bandwidth and/or spacing, then it can be considered a multiplenumerology.

Downlink reference signals are predefined signals occupying specificresource elements within a downlink time-frequency grid. There areseveral types of downlink reference signals that can be transmitted indifferent ways and used for different purposes by a receiving terminal.Channel state information reference signals (CSI-RS) can be used byterminals to acquire channel-state information (CSI) and beam specificinformation (e.g., beam reference signal received power). In 5G, CSI-RScan be user equipment (UE) specific so it can have a significantly lowertime/frequency density. Demodulation reference signals (DM-RS), alsosometimes referred to as UE-specific reference signals, can be used byterminals for channel estimation of data channels. The label“UE-specific” relates to each demodulation reference signal beingintended for channel estimation by a single terminal. The demodulationreference signal can then be transmitted within the resource blocksassigned for data traffic channel transmission to that terminal. Otherthan the aforementioned reference signals, there are other referencesignals, namely multi-cast broadcast single frequency network (MBSFN)and positioning reference signals that can be used for various purposes.

One of the challenges of cloud radio access network (C-RAN) operationsis the transmission burden over the fronthaul links. To meet alow-latency requirement, optical fibers can be used as the transmissionmedia between a digital unit (DU) and a radio unit (RU). Due to theincreasing bandwidth and the application of massive MIMO for 5G systems,the data rate on fronthaul links can increase. For example, the case ofa 400 MHz NR system with 8 CSI-RS ports can be up to 27.2 Gbps. Inaddition, the data rate can expand to 100s of Gbps with carrieraggregation, which means that a large number of optical fibers can beneeded for network construction.

However, the precoding or beamforming can be performed at the RU and theprecoder coefficients can be dictated by DU. Since the precodingoperation can be performed at the resource block (RB) level/resourceelement (RE) level, the number of coefficients sent over the fiber linkcan increase with bandwidth. This, in turn, can increase the overhead ofthe fiber link in addition to the data.

Compression techniques can be used to reduce the overhead in thefronthaul link at the DU. However, the UE can report the channel stateinformation based on the reference signals transmitted from the RU. TheUE can report the CSI based on the CSI-RS transmitted from the RU, whichis based on the compressed precoding. While the data transmission can bebased on the DM-RS based on the precoding at the DU, there can be amismatch between the CSI reported by the UE and the channel qualityduring the data transmission. This can reduce the throughput of theC-RAN systems. Hence, an efficient solution can minimize the loss due tothe channel mismatch between and during the channel sounding and datatransmission.

The precoding matrix can be transmitted in the front haul C-RAN systemsfrom DU to RU during the channel state information reference signaltransmission and during data transmission. The DU can compute theprecoder matrix from the estimated channel from the uplink. Once itcomputes the channel it can determine the coefficients for the linearcombination, the basis vectors which are known at the DU, as well as atRU for the CSI-RS transmission. However, it can utilize a differentnumber of coefficients for data traffic transmission. Once it computesthe coefficients it can transmit the coefficients using compressiontechniques. Once the RU receives the compressed coefficients, it canreconstruct the precoder matrix and apply the reconstructed precodermatrix to the CSI-RS and data traffic. For example, the DU can computethe precoder matrix from the estimated channel matrix, compress theinformation related to precoder coefficients for the CSI-RStransmission, and compress the information related to precodercoefficients for the data traffic channel transmission. The RU can thenreconstruct the precoder matrix from the information received from theDU for CSI-RS transmission and for data traffic channels. Thegeneralized system equation is given by:

Y=HP3P2P1x+n,  Equation (1):

Assuming that the complete channel knowledge is available at thetransmitter, this can be done using a sounding reference signal or othermeans. For the ideal performance, a generalized system equation is givenby equation (2):

Y=UDV′Px+n,  Equation (2)

Where H is represented as the SVD and P is the combination of P3P2P1.The capacity can be achieved if the precoder matrix P is equal to V. Forsimplicity, assume P1 and P3 is a unit vector.

Even though the SVD representation is optimal, the representation of P2can be minimized based on port mapping. For example, if each CSI-RS portis mapped only on all the co-polarized elements of a column, P2 can bewritten as:

$\begin{matrix}{{{P\; 2} = \begin{bmatrix}{P2}_{1} & \Phi & \ldots & \Phi \\\Phi & {P\; 2_{2}} & \ldots & \Phi \\\vdots & \vdots & \ddots & \vdots \\\Phi & \Phi & \ldots & {P\; 2_{8}}\end{bmatrix}},} & {{Equation}\mspace{14mu} (3)}\end{matrix}$

Where Φ is given a zero vector of size (8×1) and P2_(k) is a (8×1)vector containing the mapping of the kth CSI0RS port on the 8 TxRU thekth port is mapped on to.

Thus, the channel matrix can be written as:

H=[h ₁ h ₂ . . . h ₈],  Equation (4)

where the h_(k) is an n×8 MIMO channel across the TxRUs of the kthCSI-RS port. Now we create a partial covariance matrix of the MIMOchannel H as:

$\begin{matrix}{{\Psi_{partial} = {\begin{bmatrix}\Psi_{1} & \Phi & \ldots & \Phi \\\Phi & \Psi_{2} & \ldots & \Phi \\\vdots & \vdots & \ddots & \vdots \\\Phi & \Phi & \ldots & \Psi_{8}\end{bmatrix} = \begin{bmatrix}{h_{1}^{H}h_{1}} & \Phi & \ldots & \Phi \\\Phi & {h_{2}^{H}h_{2}} & \ldots & \Phi \\\vdots & \vdots & \ddots & \vdots \\\Phi & \Phi & \ldots & {h_{8}^{H}h_{8}}\end{bmatrix}}},} & {{Equation}\mspace{14mu} (5)}\end{matrix}$

Where Φ now represents an 8×8 zero matrix.

From Equation (5) one can deduce that the channel covariance within theTxRU of a given CSI-RS port k is given by ψ_(k). Therefore, the optimumprecoder P2_(k) for the kth CSI-RS port can be given by the dominantEigen vector of ψ_(k) as shown in Equation (6).

ψ_(k) =Q _(k)Λ_(k) Q _(k) ⁻¹

P2_(k) =Q _(k)(1)  Equation (6)

Hence, the main principle is to compute the SVD for each column andformulate the beamforming matrix. This can facilitate the beam spacerepresentation and compression such that the representation can reducethe signaling overhead from DU to RU.

The basis vectors can be defined as DFT vectors which are known to theDU and RU. In one embodiment, the DU and RU know the basis vectors apriori. In another embodiment, the DU can periodically or for the firsttime transmit the basis vectors to RU.

Thus, the basis vectors as DFT vectors can be defined as:

$\begin{matrix}{{U = \left\lbrack {u_{1}\mspace{14mu} u_{2}\mspace{14mu} \ldots \mspace{14mu} u_{8}} \right\rbrack}{u_{k} = \left\lbrack {1\mspace{14mu} e^{2\; \pi \; j\; \frac{k - 8}{8}}\mspace{14mu} \ldots \mspace{14mu} e^{2\; \pi \; j\; \frac{7{({k - 1})}}{8}}} \right\rbrack^{T}}} & {{Equation}\mspace{14mu} (7)}\end{matrix}$

The basis vectors u_(k) for a set of ortho-normal vectors. Since theyare essentially DFT vectors, this can also be seen as a basis vectors ofthe beam-space. In this beam space each P2_(k) can be written as:

$\begin{matrix}{{{P\; 2_{k}} = {\sum\limits_{l = 1}^{8}{\alpha_{k,l}u_{l}}}}{\alpha_{k,l} = {{u_{l}^{H} \cdot P}\; 2_{k}}}} & {{Equation}\mspace{14mu} (8)}\end{matrix}$

Since there are a total of 8 basis vectors, each P2_(k) can be expressedas a linear combination of the 8 basis vectors. Hence, if the DU cancompress the coefficients α_(k,l) for each P2_(k). In addition, thesignaling can be further compressed between the DU and RU by choosingonly ‘M’ values of α_(k,l) for each P2_(k).

Precoding coefficients can be compressed based on UE signal interferenceto noise ratio (SINR) or path loss in front haul C-RAN systems. The DUcan generate the best precoder matrix from the estimated channel from anuplink signal. Once it generates the channel, the DU can find thecoefficients for the linear combination of the basis vectors, which areknown at the DU and at the RU. The DU can then estimate the path lossand the SINR and decide the number of basis vectors to use. The DU canthen compress the coefficients and transmit the coefficients to the RU.Once the RU receives the compressed coefficients, the RU can reconstructthe precoder matrix and apply for reference signals and data trafficchannels. Thus, the DU can generate the precoder matrix from anestimated channel matrix, and compress the information related to theprecoder coefficients based on the SINR and/or the path loss of the UE.The RU can reconstruct the precoder matrix from the information receivedfrom the DU.

In one embodiment, described herein is a method comprising receiving anuplink reference signal associated with a channel. Based on acharacteristic of the channel, the method can comprise generating aprecoder matrix, and based on the precoder matrix, the method cancomprise determining a channel coefficient associated with a linearcombination of a basis vector associated with the wireless network.Based on the channel coefficient, the method can comprise estimating, asignal attribute associated with the uplink reference signal, resultingin an estimated signal attribute. Furthermore, based on the estimatedsignal attribute, the method can comprise compressing the channelcoefficient.

According to another embodiment, a system can facilitate, receiving anuplink reference signal associated with a channel utilized by a mobiledevice. Based on the channel, the system can generate a precoder matrix.In response to the generating the precoder matrix, the system candetermine a channel coefficient associated with the channel.Additionally, in response to the determining the channel coefficient,the system can estimate a signal attribute associated with the uplinkreference signal. Furthermore, based on a result of the estimating, thesystem can compress the channel coefficient, resulting in a compressedchannel coefficient

According to yet another embodiment, described herein is amachine-readable storage medium that can perform the operationscomprising generating a precoder matrix based on an uplink referencesignal associated with a channel. The machine-readable storage mediumcan use the precoder matrix to determine a channel coefficientassociated with a linear combination of a basis vector. Themachine-readable storage medium can use the channel coefficient toestimate a signal attribute associated with the uplink reference signal,resulting in an estimated signal attribute. Additionally, based on theestimated signal attribute, the machine-readable storage medium cancompress the channel coefficient, resulting in a compressed channelcoefficient.

These and other embodiments or implementations are described in moredetail below with reference to the drawings.

Referring now to FIG. 1, illustrated is an example wirelesscommunication system 100 in accordance with various aspects andembodiments of the subject disclosure. In one or more embodiments,system 100 can comprise one or more user equipment UEs 102. Thenon-limiting term user equipment can refer to any type of device thatcan communicate with a network node in a cellular or mobilecommunication system. A UE can have one or more antenna panels havingvertical and horizontal elements. Examples of a UE comprise a targetdevice, device to device (D2D) UE, machine type UE or UE capable ofmachine to machine (M2M) communications, personal digital assistant(PDA), tablet, mobile terminals, smart phone, laptop mounted equipment(LME), universal serial bus (USB) dongles enabled for mobilecommunications, a computer having mobile capabilities, a mobile devicesuch as cellular phone, a laptop having laptop embedded equipment (LEE,such as a mobile broadband adapter), a tablet computer having a mobilebroadband adapter, a wearable device, a virtual reality (VR) device, aheads-up display (HUD) device, a smart car, a machine-type communication(MTC) device, and the like. User equipment UE 102 can also comprise IOTdevices that communicate wirelessly.

In various embodiments, system 100 is or comprises a wirelesscommunication network serviced by one or more wireless communicationnetwork providers. In example embodiments, a UE 102 can becommunicatively coupled to the wireless communication network via anetwork node 104. The network node (e.g., network node device) cancommunicate with user equipment (UE), thus providing connectivitybetween the UE and the wider cellular network. The UE 102 can sendtransmission type recommendation data to the network node 104. Thetransmission type recommendation data can comprise a recommendation totransmit data via a closed loop MIMO mode and/or a rank-1 precoder mode.

A network node can have a cabinet and other protected enclosures, anantenna mast, and multiple antennas for performing various transmissionoperations (e.g., MIMO operations). Network nodes can serve severalcells, also called sectors, depending on the configuration and type ofantenna. In example embodiments, the UE 102 can send and/or receivecommunication data via a wireless link to the network node 104. Thedashed arrow lines from the network node 104 to the UE 102 representdownlink (DL) communications and the solid arrow lines from the UE 102to the network nodes 104 represents an uplink (UL) communication.

System 100 can further include one or more communication serviceprovider networks that facilitate providing wireless communicationservices to various UEs, including UE 102, via the network node 104and/or various additional network devices (not shown) included in theone or more communication service provider networks. The one or morecommunication service provider networks can include various types ofdisparate networks, including but not limited to: cellular networks,femto networks, picocell networks, microcell networks, internet protocol(IP) networks Wi-Fi service networks, broadband service network,enterprise networks, cloud based networks, and the like. For example, inat least one implementation, system 100 can be or include a large scalewireless communication network that spans various geographic areas.According to this implementation, the one or more communication serviceprovider networks can be or include the wireless communication networkand/or various additional devices and components of the wirelesscommunication network (e.g., additional network devices and cell,additional UEs, network server devices, etc.). The network node 104 canbe connected to the one or more communication service provider networksvia one or more backhaul links 108. For example, the one or morebackhaul links 108 can comprise wired link components, such as a T1/E1phone line, a digital subscriber line (DSL) (e.g., either synchronous orasynchronous), an asymmetric DSL (ADSL), an optical fiber backbone, acoaxial cable, and the like. The one or more backhaul links 108 can alsoinclude wireless link components, such as but not limited to,line-of-sight (LOS) or non-LOS links which can include terrestrialair-interfaces or deep space links (e.g., satellite communication linksfor navigation).

Wireless communication system 100 can employ various cellular systems,technologies, and modulation modes to facilitate wireless radiocommunications between devices (e.g., the UE 102 and the network node104). While example embodiments might be described for 5G new radio (NR)systems, the embodiments can be applicable to any radio accesstechnology (RAT) or multi-RAT system where the UE operates usingmultiple carriers e.g. LTE FDD/TDD, GSM/GERAN, CDMA2000 etc.

For example, system 100 can operate in accordance with global system formobile communications (GSM), universal mobile telecommunications service(UMTS), long term evolution (LTE), LTE frequency division duplexing (LTEFDD, LTE time division duplexing (TDD), high speed packet access (HSPA),code division multiple access (CDMA), wideband CDMA (WCMDA), CDMA2000,time division multiple access (TDMA), frequency division multiple access(FDMA), multi-carrier code division multiple access (MC-CDMA),single-carrier code division multiple access (SC-CDMA), single-carrierFDMA (SC-FDMA), orthogonal frequency division multiplexing (OFDM),discrete Fourier transform spread OFDM (DFT-spread OFDM) single carrierFDMA (SC-FDMA), Filter bank based multi-carrier (FBMC), zero tailDFT-spread-OFDM (ZT DFT-s-OFDM), generalized frequency divisionmultiplexing (GFDM), fixed mobile convergence (FMC), universal fixedmobile convergence (UFMC), unique word OFDM (UW-OFDM), unique wordDFT-spread OFDM (UW DFT-Spread-OFDM), cyclic prefix OFDM CP-OFDM,resource-block-filtered OFDM, Wi Fi, WLAN, WiMax, and the like. However,various features and functionalities of system 100 are particularlydescribed wherein the devices (e.g., the UEs 102 and the network device104) of system 100 are configured to communicate wireless signals usingone or more multi carrier modulation schemes, wherein data symbols canbe transmitted simultaneously over multiple frequency subcarriers (e.g.,OFDM, CP-OFDM, DFT-spread OFMD, UFMC, FMBC, etc.). The embodiments areapplicable to single carrier as well as to multicarrier (MC) or carrieraggregation (CA) operation of the UE. The term carrier aggregation (CA)is also called (e.g. interchangeably called) “multi-carrier system”,“multi-cell operation”, “multi-carrier operation”, “multi-carrier”transmission and/or reception. Note that some embodiments are alsoapplicable for Multi RAB (radio bearers) on some carriers (that is dataplus speech is simultaneously scheduled).

In various embodiments, system 100 can be configured to provide andemploy 5G wireless networking features and functionalities. 5G wirelesscommunication networks are expected to fulfill the demand ofexponentially increasing data traffic and to allow people and machinesto enjoy gigabit data rates with virtually zero latency. Compared to 4G,5G supports more diverse traffic scenarios. For example, in addition tothe various types of data communication between conventional UEs (e.g.,phones, smartphones, tablets, PCs, televisions, Internet enabledtelevisions, etc.) supported by 4G networks, 5G networks can be employedto support data communication between smart cars in association withdriverless car environments, as well as machine type communications(MTCs). Considering the drastic different communication needs of thesedifferent traffic scenarios, the ability to dynamically configurewaveform parameters based on traffic scenarios while retaining thebenefits of multi carrier modulation schemes (e.g., OFDM and relatedschemes) can provide a significant contribution to the highspeed/capacity and low latency demands of 5G networks. With waveformsthat split the bandwidth into several sub-bands, different types ofservices can be accommodated in different sub-bands with the mostsuitable waveform and numerology, leading to an improved spectrumutilization for 5G networks.

To meet the demand for data centric applications, features of proposed5G networks may comprise: increased peak bit rate (e.g., 20 Gbps),larger data volume per unit area (e.g., high system spectralefficiency—for example about 3.5 times that of spectral efficiency oflong term evolution (LTE) systems), high capacity that allows moredevice connectivity both concurrently and instantaneously, lowerbattery/power consumption (which reduces energy and consumption costs),better connectivity regardless of the geographic region in which a useris located, a larger numbers of devices, lower infrastructuraldevelopment costs, and higher reliability of the communications. Thus,5G networks may allow for: data rates of several tens of megabits persecond should be supported for tens of thousands of users, 1 gigabit persecond to be offered simultaneously to tens of workers on the sameoffice floor, for example; several hundreds of thousands of simultaneousconnections to be supported for massive sensor deployments; improvedcoverage, enhanced signaling efficiency; reduced latency compared toLTE.

The upcoming 5G access network may utilize higher frequencies (e.g., >6GHz) to aid in increasing capacity. Currently, much of the millimeterwave (mmWave) spectrum, the band of spectrum between 30 gigahertz (Ghz)and 300 Ghz is underutilized. The millimeter waves have shorterwavelengths that range from 10 millimeters to 1 millimeter, and thesemmWave signals experience severe path loss, penetration loss, andfading. However, the shorter wavelength at mmWave frequencies alsoallows more antennas to be packed in the same physical dimension, whichallows for large-scale spatial multiplexing and highly directionalbeamforming.

Performance can be improved if both the transmitter and the receiver areequipped with multiple antennas. Multi-antenna techniques cansignificantly increase the data rates and reliability of a wirelesscommunication system. The use of multiple input multiple output (MIMO)techniques, which was introduced in the third-generation partnershipproject (3GPP) and has been in use (including with LTE), is amulti-antenna technique that can improve the spectral efficiency oftransmissions, thereby significantly boosting the overall data carryingcapacity of wireless systems. The use of multiple-input multiple-output(MIMO) techniques can improve mmWave communications, and has been widelyrecognized a potentially important component for access networksoperating in higher frequencies. MIMO can be used for achievingdiversity gain, spatial multiplexing gain and beamforming gain. Forthese reasons, MIMO systems are an important part of the 3rd and 4thgeneration wireless systems, and are planned for use in 5G systems.

FIG. 2 depicts a message sequence chart for downlink data transfer in 5Gsystems 200. The network node 106 can transmit reference signals to auser equipment (UE) 102. The reference signals can be cell specificand/or user equipment 102 specific in relation to a profile of the userequipment 102 or some type of mobile identifier. From the referencesignals, the user equipment 102 can compute channel state information(CSI) and compute parameters needed for a CSI report at block 202. TheCSI report can comprise: a channel quality indicator (CQI), a pre-codingmatrix index (PMI), rank information (RI), a CSI-resource indicator(e.g., CRI the same as beam indicator), etc.

The user equipment 102 can then transmit the CSI report to the networknode 106 via a feedback channel either on request from the network node106, a-periodically, and/or periodically. A network scheduler canleverage the CSI report to determine downlink transmission schedulingparameters at 204, which are particular to the user equipment 102. Thescheduling parameters 204 can comprise modulation and coding schemes(MCS), power, physical resource blocks (PRBs), etc. FIG. 2 depicts thephysical layer signaling where the density change can be reported forthe physical layer signaling or as a part of the radio resource control(RRC) signaling. In the physical layer, the density can be adjusted bythe network node 106 and then sent over to the user equipment 102 as apart of the downlink control channel data. The network node 106 cantransmit the scheduling parameters, comprising the adjusted densities,to the user equipment 102 via the downlink control channel. Thereafterand/or simultaneously, data can be transferred, via a data trafficchannel, from the network node 106 to the user equipment 102.

Referring now to FIG. 3, illustrated is an example schematic systemblock diagram of a passive antenna array according to one or moreembodiments. FIG. 3 depicts an example of a passive antenna array system(AAS) 300 where baseband signals from a baseband device 302 can beboosted by a power amplifier 304 and connected to antennas 308 by longerfeedback cables 306 that can comprise a power combiner, a power dividerand/or a phase shifter. Consequently, in passive AAS, the basebanddevice 302 cannot control all of the radio components. However, activeAASs, as depicted in FIG. 4, can reduce cable losses and energyconsumption, increase performance, simplify installation and reduceequipment space.

Referring now to FIG. 4, illustrated is an example schematic systemblock diagram of an active antenna array according to one or moreembodiments. FIG. 4 depicts an active array antenna system (AAS) 400,where radio frequency (RF) components such as power amplifiers 404 andtransceivers can be integrated with an array of antennas 406. ActiveAASs 400 offer several benefits compared to traditional deployments withpassive antennas connected to transceivers through feeder cables. Thus,the baseband device 402 can control all of the RF components.

Additionally, there are many applications of active AASs including, butnot limited to: cell specific beamforming, user specific beamforming,vertical sectorization, massive MIMO, elevation beamforming, hybridbeamforming, etc. AASs can also be an enabler for further-advancedantenna concepts such as deploying several MIMO antenna elements at thegNB. For example, the gNB can be deployed with 32/64/128/256 antennaelements. When massive MIMO are deployed at the network side, to achievebeamforming/multiplexing gains, each RF component can be equal to thatof antenna element. However, the cost for deploying RF circuitry foreach antenna element can be reduced by using the concept of hybridbeamforming.

Referring now to FIG. 5 illustrates an example schematic system blockdiagram of an antenna array for hybrid beamforming according to one ormore embodiments. FIG. 5 depicts an example of hybrid beamforming usingan active AAS 400. The system 500 can comprise a baseband device 402,and an array of antennas 406 comprising antenna elements 506. In hybridforming, if the number of antenna elements 506 is equal to N, and thenetwork uses Np ports (Np=2 or 4 or 8 or 16), then the signalstransmitted from N elements can be virtualized from the Np antennaports. Thus, the received signals for the i^(th) subcarrier can bewritten as,

Y=HFWx+n,  Equation (10)

where H is the channel matrix between the transmitter antenna elementsof dimensions (N_(r)×N), F is the analog beamforming matrix ofdimensions (N×N_(p)), W is the digital precoding matrix of dimensions(N_(p)×R), x is the transmitted signal vector of size (R×1), and R isthe transmission rank of the system.

Referring now to FIG. 6, illustrated is an example schematic systemblock diagram of a cloud radio access network architecture 600 accordingto one or more embodiments. The cloud radio access networks (C-RAN) alsocalled centralized RAN is a cellular architecture where the basebanddigital units (DU) 604 can be centralized as a virtual resource pool andthe remote radio units (RU) 606 can be located at places which are up toseveral miles away from DU and or centralized unite (CU) 602. FIG. 6depicts the block diagram of the C-RAN. The link between DU and the RUis called a front haul.

In an embodiment, there can be a CU 602 that performs upper level MediumAccess Control (MAC), a DU 604 that performs lower level MAC andphysical layer functionality, and an RU 606 that can transmit andreceive RF signals and convert analog signals to digital signals andvice versa. Each of the CU 602, DU 204, and RU 606 can be linked via afiber optical network or other high bandwidth front haul network. Toreduce complexity and bandwidth, the transmissions sent between the CU602, DU 604, and RU 606 can be digital, so the RU 606 can receive analogsignals and convert the analog RF signals to digital before transmittingto the DU 604. Similarly, the RU 606 can receive a digital transmissioncomprising the IQ data and beamforming coefficients and perform thedigital beamforming, and digital to analog conversion at the RU 606.

The network node 104 can employ beamforming when transmitting to the UE102. Beamforming is a signal processing technique used in sensor arraysfor directional signal transmission or reception. This is achieved bycombining elements in an antenna array in such a way that signals atparticular angles experience constructive interference while othersexperience destructive interference.

Beamforming can be used at both the transmitting and receiving ends inorder to achieve spatial selectivity. The improvement compared withomnidirectional reception/transmission is known as the directivity ofthe array. In the wireless communications context, a traffic-signalingsystem for cellular base stations that identifies the most efficientdata-delivery route to a particular user, and it reduces interferencefor nearby users in the process. Depending on the situation and thetechnology, there are several ways to implement it in 5G networks.

Beamforming can help massive MIMO arrays, which are base stationsarrayed with dozens or hundreds of individual antennas, to make moreefficient use of the spectrum around them. The primary challenge formassive MIMO is to reduce interference while transmitting moreinformation from many more antennas at once. At massive MIMO basestations, signal-processing algorithms plot the best transmission routethrough the air to each user. Then they can send individual data packetsin many different directions, bouncing them off buildings and otherobjects in a precisely coordinated pattern. By choreographing thepackets' movements and arrival time, beamforming allows many users andantennas on a massive MIMO array to exchange much more information atonce. During beamforming, a data stream can be used to generate multipledata streams, each corresponding to an antenna port, and the datastreams can each be modified based on a beamforming vector.

Frequency modulated IQ data can have “L” CSI-RS ports, where L is thenumber of layers associated with the data, and F tones beforebeamforming A=L×F matrix). After beamforming, the IQ data has P ports(each antenna) and F tones (B=P×F matrix). In digital beamforming, P2 isa P×L matrix where the rows of the matrix correspond to the number ofports, and columns correspond to the number of layers. This means thatB=P2×A. In an embodiment of the disclosure then, the beamformingcoefficients are compressed by adaptively quantizing each column of thebeamforming matrix P2. Each column of P2 is quantized by Q₁ bits. Q₁ canbe communicated to the RU at the same time.

Referring now to FIG. 7, illustrated is an example schematic systemblock diagram of split options for fronthaul 700 according to one ormore embodiments. FIG. 7 depicts the precoding operation being performedat RU. However, the scheduler in the DU can control theprecoder/beamforming weights at RU.

In an embodiment, various functionalities can be performed on datachannel and control channels (e.g., PBCH) at the baseband unit devicesuch as coding 702, rate matching 704, scrambling 706, and modulation708, layer mapping 712 and precoding 716. The precoding 716 can be basedon precoding matrix information as received from the user equipmentdevice. Similarly, other functionalities related to cell specificsignals (e.g., SS, CSI-RS, and UE specific signaling (e.g., demodulationreference signal (DMRS)) can be performed at the baseband unit as well,such as signal generation 710, layer mapping 714, and precoding 718. At720, remapping, the baseband unit can calculate beamforming coefficientsthat can be used by the remote radio unit to perform beam weighting onthe IQ data.

Demarcation line 730 can indicate the activities which above the line730 are performed at the baseband unit 604, while the activities belowthe line 730 are performed at the remote radio unit 606.

Once the baseband unit 604 sends the beamforming coefficients to theremote radio unit 606, the remote radio unit 604 can perform digitalbeamforming 322, IFFT/CP addition 624, Digital to analog conversion 626,and then perform analog beamforming 628 before transmitting the data tothe UE.

Referring now to FIG. 8, illustrated is a spectral efficiency graphaccording to one or more embodiments. FIG. 8 depicts the spectralefficiency with different values M (M=number of basis vectors) withquantization of 3 bits for each part of α_(k,l) (e.g., the real part andthe imaginary part). It can be observed that when the value of M isincreased, the system performance is better. The overhead is increasedas more coefficients are sent for a higher value of M. However, if thevalue of M is decreased, the performance is impacted significantlyalbeit with a reduced overhead.

At a low SINR, the performance with M=8, 4, 2, is almost same, while athigher SINR the performance is same. This is because at low SINR, theprecoding has no impact as the system is more limited by the thermalnoise. At a high SINR, there is no difference between different valuesof M, as the performance is saturated by a modulation and coding scheme.Hence at a medium SINR, the performance is impacted by a different valueof M. The DU 604 can obtain the SINR of the UE 102 and divide SINR intovarious regions such as low SINR, medium SINR, and/or high SINR. Forexample, if it is less than 10 dB then it can be a low SINR and if theSINR is greater than 25 dB, then it can be a high SINR. The other SINRscan be considered as medium SINRs. When the system divides the UEsaccording to various SINRs, the system can assign different values of Mfor each UE based on the SINR. Thus, for low and high SINR UEs, thesystem can use a small value of M for reducing the overhead, while formedium SINR UEs the system an assign a higher value of M. Thus, theperformance is not impacted without increasing the overhead. In anotherembodiment, the DU 604 can compute the path loss of each UE and assignsthe different values of M based on the path loss. The path loss can beinversely proportional to the long term SINR.

Referring now to FIG. 9, illustrates an example schematic system blockdiagram of multi-stage representation of massive multiple-inmultiple-out precoding according to one or more embodiments. Inflowchart 900, remultiplexing 902 and 904 can be performed on datastreams corresponding to “M” MIMO layers, which can then go throughprecoding at 906. The output of the precoding 906 can be moreremultiplexing 908 and 910 corresponding to L different CSI-RS ports (orlayers). These L streams can then be digitally beamformed at 914 andsplit into data streams relating to P antenna ports. P can be muchlarger then L, so to reduce the overhead signaling, the digitalbeamforming 914 is performed at the remote radio unit, while otherfunctionalities above the demarcation line 912 are performed at thebaseband unit. IFFT/CP blocks 916 and 918 are applied to the P datastreams, then analog to digital conversations 920 and 922 are appliedbefore analog beamforming is performed to the P data streams at 924 and926 and then the P data streams are transmitted via P antenna ports 928and 930.

To perform the digital beamforming 914 at the remote radio unit, theremote radio unit receives the IQ data (frequency modulated data) alongwith the beamforming coefficients. The digital beamforming block usesthe beamforming coefficients along with a basis vector matrix to performthe beamforming on each k_(th) data stream corresponding to P antennaports. Matrix inherently have low rank. A known codeword is sent betweenthe DU and RU and send indices in the codebook to determine which columnto look at and a multiplier for each column.

As described above, frequency modulated IQ data can have “L” CSI-RSports, where L is the number of layers associated with the data, and Ftones before beamforming A=L×F matrix). After beamforming, the IQ datahas P ports (each antenna) and F tones (B=P×F matrix). In digitalbeamforming, P2 is a P×L matrix where the rows of the matrix correspondto the number of ports, and columns correspond to the number of layers.This means that B=P2×A. In an embodiment of the disclosure then, thebeamforming coefficients are compressed by adaptively quantizing eachcolumn of the beamforming matrix P2. Each column of P2 is quantized byQ₁ bits. Q₁ is communicated to the RU at the same time.

Each column of P2 can be decomposed into a linear combination of certainbasis vectors. The basis vectors can be the columns of a P×P orthonormalmatrix. As an example, the size P Fourier matrix can be used. Eachcolumn of P2 denoted as P2₁ for 1 going from 1 to L can be denoted as

$\begin{matrix}{{P\; 2_{k}} = {\sum\limits_{k = 1}^{P}{a_{k}e^{{- i}\; \theta_{k}}V_{k}}}} & {{Equation}\mspace{14mu} 11}\end{matrix}$

Where the set {V_(k):k ∈ [1, 2, . . . P]} is the set of basis vectorsthat is known to both the baseband unit and the remote radio unit. Thebaseband unit then decides to send a subset S of the basis coefficientsand the basis vector index. In effect the baseband unit quantizes andsends {k,

,

:k ∈ S}. For example, S can be {1, 2, 5} or any subset of the set {1, 2,. . . L}. The hat operator can denote quantization. The remote radiounit can then reconstruct the beamforming matrix using the following:

$\begin{matrix}{= {\sum\limits_{k \in S}}} & {{Equation}\mspace{14mu} 12}\end{matrix}$

The selection of the set S and the quantization can be decided by thebaseband unit. In the least compressed version, the set S is the fullset {1, 2, . . . L} and in that scenario the beamforming matrix istransmitted practically without any compression.

In Equation 1, the α and θ elements can be the beamforming coefficients,or the modifiers that weight the already known V, which is the basisvector/matrix that is known to both the DU 604 and the RU 606. V_(k) isthe k^(th) column of the basis matrix. So, for each antenna port P thereis a set of beamforming coefficients α and θ that are used, inconjunction with the corresponding basis vector, to digitally beamformthe data stream that corresponds to the port. These beamformingcoefficients, a set of α and θ for each kth value, are sent along withthe data to the remote radio unit.

Referring now to FIG. 10, illustrated is an example flow diagram for amethod for facilitating user equipment specific compression ofbeamforming coefficients for a 5G network according to one or moreembodiments. At element 1000, the DU 604 can receive an uplink referencesignal associated with a channel. Based on a characteristic of thechannel, at element 1002, the DU 604 can generate a precoder matrix, andbased on the precoder matrix, the DU 604 can determine a channelcoefficient associated with a linear combination of a basis vectorassociated with a wireless network at element 1004. Based on the channelcoefficient, the DU 604 can estimate a signal attribute associated withthe uplink reference signal, resulting in an estimated signal attributeat element 1006. Furthermore, based on the estimated signal attribute,the DU 604 can compress the channel coefficient at element 1008.

Referring now to FIG. 11, illustrated is an example flow diagram for asystem for facilitating user equipment specific compression ofbeamforming coefficients for a 5G network according to one or moreembodiments. At element 1100, a system can facilitate, receiving (e.g.,via the DU 604) an uplink reference signal associated with a channelutilized by a mobile device (e.g., UE 102). Based on the channel, thesystem can generate (e.g., via the DU 604) a precoder matrix at element1102. In response to the generating the precoder matrix, at element1104, the system can determine (e.g., via the DU 604) a channelcoefficient associated with the channel. Additionally, in response tothe determining the channel coefficient, the system can compriseestimating (e.g., via the DU 604) a signal attribute associated with theuplink reference signal at element 1106. Furthermore, based on a resultof the estimating, at element 1108, the system can compress (e.g., viathe DU 604) the channel coefficient, resulting in a compressed channelcoefficient.

Referring now to FIG. 12, illustrated is an example flow diagram for amachine-readable medium for facilitating user equipment specificcompression of beamforming coefficients for a 5G network according toone or more embodiments. At element 1200, a precoder matrix can begenerated (e.g., via the DU 604) based on an uplink reference signalassociated with a channel. The machine-readable storage medium can usethe precoder matrix, to determine (e.g., via the DU 604) a channelcoefficient associated with a linear combination of a basis vector atelement 1202. At element 1204, the machine-readable storage mediumoperations can comprise using the channel coefficient to estimate (e.g.,via the DU 604) a signal attribute associated with the uplink referencesignal, resulting in an estimated signal attribute. Additionally, basedon the estimated signal attribute, the machine-readable storage mediumoperations can comprise compressing (e.g., via the DU 604) the channelcoefficient, resulting in a compressed channel coefficient at element1206.

Referring now to FIG. 13, illustrated is an example block diagram of anexample mobile handset 1300 operable to engage in a system architecturethat facilitates wireless communications according to one or moreembodiments described herein. Although a mobile handset is illustratedherein, it will be understood that other devices can be a mobile device,and that the mobile handset is merely illustrated to provide context forthe embodiments of the various embodiments described herein. Thefollowing discussion is intended to provide a brief, general descriptionof an example of a suitable environment in which the various embodimentscan be implemented. While the description includes a general context ofcomputer-executable instructions embodied on a machine-readable storagemedium, those skilled in the art will recognize that the innovation alsocan be implemented in combination with other program modules and/or as acombination of hardware and software.

Generally, applications (e.g., program modules) can include routines,programs, components, data structures, etc., that perform particulartasks or implement particular abstract data types. Moreover, thoseskilled in the art will appreciate that the methods described herein canbe practiced with other system configurations, includingsingle-processor or multiprocessor systems, minicomputers, mainframecomputers, as well as personal computers, hand-held computing devices,microprocessor-based or programmable consumer electronics, and the like,each of which can be operatively coupled to one or more associateddevices

A computing device can typically include a variety of machine-readablemedia. Machine-readable media can be any available media that can beaccessed by the computer and includes both volatile and non-volatilemedia, removable and non-removable media. By way of example and notlimitation, computer-readable media can comprise computer storage mediaand communication media. Computer storage media can include volatileand/or non-volatile media, removable and/or non-removable mediaimplemented in any method or technology for storage of information, suchas computer-readable instructions, data structures, program modules, orother data. Computer storage media can include, but is not limited to,RAM, ROM, EEPROM, flash memory or other memory technology, solid statedrive (SSD) or other solid-state storage technology, Compact Disk ReadOnly Memory (CD ROM), digital video disk (DVD), Blu-ray disk, or otheroptical disk storage, magnetic cassettes, magnetic tape, magnetic diskstorage or other magnetic storage devices, or any other medium which canbe used to store the desired information and which can be accessed bythe computer. In this regard, the terms “tangible” or “non-transitory”herein as applied to storage, memory or computer-readable media, are tobe understood to exclude only propagating transitory signals per se asmodifiers and do not relinquish rights to all standard storage, memoryor computer-readable media that are not only propagating transitorysignals per se.

Communication media typically embodies computer-readable instructions,data structures, program modules, or other data in a modulated datasignal such as a carrier wave or other transport mechanism, and includesany information delivery media. The term “modulated data signal” means asignal that has one or more of its characteristics set or changed insuch a manner as to encode information in the signal. By way of example,and not limitation, communication media includes wired media such as awired network or direct-wired connection, and wireless media such asacoustic, RF, infrared and other wireless media. Combinations of the anyof the above should also be included within the scope ofcomputer-readable media

The handset includes a processor 1302 for controlling and processing allonboard operations and functions. A memory 1304 interfaces to theprocessor 1302 for storage of data and one or more applications 1306(e.g., a video player software, user feedback component software, etc.).Other applications can include voice recognition of predetermined voicecommands that facilitate initiation of the user feedback signals. Theapplications 1306 can be stored in the memory 1304 and/or in a firmware1308, and executed by the processor 1302 from either or both the memory1304 or/and the firmware 1308. The firmware 1308 can also store startupcode for execution in initializing the handset 1300. A communicationscomponent 1310 interfaces to the processor 1302 to facilitatewired/wireless communication with external systems, e.g., cellularnetworks, VoIP networks, and so on. Here, the communications component1310 can also include a suitable cellular transceiver 1311 (e.g., a GSMtransceiver) and/or an unlicensed transceiver 1313 (e.g., Wi-Fi, WiMax)for corresponding signal communications. The handset 1300 can be adevice such as a cellular telephone, a PDA with mobile communicationscapabilities, and messaging-centric devices. The communicationscomponent 1310 also facilitates communications reception fromterrestrial radio networks (e.g., broadcast), digital satellite radionetworks, and Internet-based radio services networks

The handset 1300 includes a display 1312 for displaying text, images,video, telephony functions (e.g., a Caller ID function), setupfunctions, and for user input. For example, the display 1312 can also bereferred to as a “screen” that can accommodate the presentation ofmultimedia content (e.g., music metadata, messages, wallpaper, graphics,etc.). The display 1312 can also display videos and can facilitate thegeneration, editing and sharing of video quotes. A serial I/O interface1314 is provided in communication with the processor 1302 to facilitatewired and/or wireless serial communications (e.g., USB, and/or IEEE1394) through a hardwire connection, and other serial input devices(e.g., a keyboard, keypad, and mouse). This supports updating andtroubleshooting the handset 1300, for example. Audio capabilities areprovided with an audio I/O component 1316, which can include a speakerfor the output of audio signals related to, for example, indication thatthe user pressed the proper key or key combination to initiate the userfeedback signal. The audio I/O component 1316 also facilitates the inputof audio signals through a microphone to record data and/or telephonyvoice data, and for inputting voice signals for telephone conversations.

The handset 1300 can include a slot interface 1318 for accommodating aSIC (Subscriber Identity Component) in the form factor of a cardSubscriber Identity Module (SIM) or universal SIM 1320, and interfacingthe SIM card 1320 with the processor 1302. However, it is to beappreciated that the SIM card 1320 can be manufactured into the handset1300, and updated by downloading data and software.

The handset 1300 can process IP data traffic through the communicationscomponent 1310 to accommodate IP traffic from an IP network such as, forexample, the Internet, a corporate intranet, a home network, a personarea network, etc., through an ISP or broadband cable provider. Thus,VoIP traffic can be utilized by the handset 1300 and IP-based multimediacontent can be received in either an encoded or a decoded format.

A video processing component 1322 (e.g., a camera) can be provided fordecoding encoded multimedia content. The video processing component 1322can aid in facilitating the generation, editing, and sharing of videoquotes. The handset 1300 also includes a power source 1324 in the formof batteries and/or an AC power subsystem, which power source 1324 caninterface to an external power system or charging equipment (not shown)by a power I/O component 1326.

The handset 1300 can also include a video component 1330 for processingvideo content received and, for recording and transmitting videocontent. For example, the video component 1330 can facilitate thegeneration, editing and sharing of video quotes. A location trackingcomponent 1332 facilitates geographically locating the handset 1300. Asdescribed hereinabove, this can occur when the user initiates thefeedback signal automatically or manually. A user input component 1334facilitates the user initiating the quality feedback signal. The userinput component 1334 can also facilitate the generation, editing andsharing of video quotes. The user input component 1334 can include suchconventional input device technologies such as a keypad, keyboard,mouse, stylus pen, and/or touch screen, for example.

Referring again to the applications 1306, a hysteresis component 1336facilitates the analysis and processing of hysteresis data, which isutilized to determine when to associate with the access point. Asoftware trigger component 1338 can be provided that facilitatestriggering of the hysteresis component 1336 when the Wi-Fi transceiver1313 detects the beacon of the access point. A SIP client 1340 enablesthe handset 1300 to support SIP protocols and register the subscriberwith the SIP registrar server. The applications 1306 can also include aclient 1342 that provides at least the capability of discovery, play andstore of multimedia content, for example, music.

The handset 1300, as indicated above related to the communicationscomponent 1310, includes an indoor network radio transceiver 1313 (e.g.,Wi-Fi transceiver). This function supports the indoor radio link, suchas IEEE 802.11, for the dual-mode GSM handset 1300. The handset 1300 canaccommodate at least satellite radio services through a handset that cancombine wireless voice and digital radio chipsets into a single handhelddevice.

Referring now to FIG. 14, illustrated is an example block diagram of anexample computer 1400 operable to engage in a system architecture thatfacilitates wireless communications according to one or more embodimentsdescribed herein. The computer 1400 can provide networking andcommunication capabilities between a wired or wireless communicationnetwork and a server (e.g., Microsoft server) and/or communicationdevice. In order to provide additional context for various aspectsthereof, FIG. 14 and the following discussion are intended to provide abrief, general description of a suitable computing environment in whichthe various aspects of the innovation can be implemented to facilitatethe establishment of a transaction between an entity and a third party.While the description above is in the general context ofcomputer-executable instructions that can run on one or more computers,those skilled in the art will recognize that the innovation also can beimplemented in combination with other program modules and/or as acombination of hardware and software.

Generally, program modules include routines, programs, components, datastructures, etc., that perform particular tasks or implement particularabstract data types. Moreover, those skilled in the art will appreciatethat the various methods can be practiced with other computer systemconfigurations, including single-processor or multiprocessor computersystems, minicomputers, mainframe computers, as well as personalcomputers, hand-held computing devices, microprocessor-based orprogrammable consumer electronics, and the like, each of which can beoperatively coupled to one or more associated devices.

The illustrated aspects of the innovation can also be practiced indistributed computing environments where certain tasks are performed byremote processing devices that are linked through a communicationsnetwork. In a distributed computing environment, program modules can belocated in both local and remote memory storage devices.

Computing devices typically include a variety of media, which caninclude computer-readable storage media or communications media, whichtwo terms are used herein differently from one another as follows.

Computer-readable storage media can be any available storage media thatcan be accessed by the computer and includes both volatile andnonvolatile media, removable and non-removable media. By way of example,and not limitation, computer-readable storage media can be implementedin connection with any method or technology for storage of informationsuch as computer-readable instructions, program modules, structureddata, or unstructured data. Computer-readable storage media can include,but are not limited to, RAM, ROM, EEPROM, flash memory or other memorytechnology, CD-ROM, digital versatile disk (DVD) or other optical diskstorage, magnetic cassettes, magnetic tape, magnetic disk storage orother magnetic storage devices, or other tangible and/or non-transitorymedia which can be used to store desired information. Computer-readablestorage media can be accessed by one or more local or remote computingdevices, e.g., via access requests, queries or other data retrievalprotocols, for a variety of operations with respect to the informationstored by the medium.

Communications media can embody computer-readable instructions, datastructures, program modules, or other structured or unstructured data ina data signal such as a modulated data signal, e.g., a carrier wave orother transport mechanism, and includes any information delivery ortransport media. The term “modulated data signal” or signals refers to asignal that has one or more of its characteristics set or changed insuch a manner as to encode information in one or more signals. By way ofexample, and not limitation, communication media include wired media,such as a wired network or direct-wired connection, and wireless mediasuch as acoustic, RF, infrared and other wireless media.

The techniques described herein can be applied to any device or set ofdevices (machines) capable of running programs and processes. It can beunderstood, therefore, that servers including physical and/or virtualmachines, personal computers, laptops, handheld, portable and othercomputing devices and computing objects of all kinds including cellphones, tablet/slate computers, gaming/entertainment consoles and thelike are contemplated for use in connection with various implementationsincluding those exemplified herein. Accordingly, the general purposecomputing mechanism described below with reference to FIG. 14 is but oneexample of a computing device.

In order to provide a context for the various aspects of the disclosedsubject matter, FIG. 14 and the following discussion, are intended toprovide a brief, general description of a suitable environment in whichthe various aspects of the disclosed subject matter can be implemented.While the subject matter has been described above in the general contextof computer-executable instructions of a computer program that runs on acomputer and/or computers, those skilled in the art will recognize thatthe disclosed subject matter also can be implemented in combination withother program modules. Generally, program modules include routines,programs, components, data structures, etc. that perform particulartasks and/or implement particular abstract data types.

In the subject specification, terms such as “store,” “storage,” “datastore,” data storage,” “database,” and substantially any otherinformation storage component relevant to operation and functionality ofa component, refer to “memory components,” or entities embodied in a“memory” or components comprising the memory. It will be appreciatedthat the memory components described herein can be either volatilememory or nonvolatile memory, or can include both volatile andnonvolatile memory, by way of illustration, and not limitation, volatilememory 1420 (see below), non-volatile memory 1422 (see below), diskstorage 1424 (see below), and memory storage 1446 (see below). Further,nonvolatile memory can be included in read only memory (ROM),programmable ROM (PROM), electrically programmable ROM (EPROM),electrically erasable ROM (EEPROM), or flash memory.

Volatile memory can include random access memory (RAM), which acts asexternal cache memory. By way of illustration and not limitation, RAM isavailable in many forms such as synchronous RAM (SRAM), dynamic RAM(DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM),enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM(DRRAM). Additionally, the disclosed memory components of systems ormethods herein are intended to comprise, without being limited tocomprising, these and any other suitable types of memory.

Moreover, it will be noted that the disclosed subject matter can bepracticed with other computer system configurations, includingsingle-processor or multiprocessor computer systems, mini-computingdevices, mainframe computers, as well as personal computers, hand-heldcomputing devices (e.g., PDA, phone, watch, tablet computers, netbookcomputers, . . . ), microprocessor-based or programmable consumer orindustrial electronics, and the like. The illustrated aspects can alsobe practiced in distributed computing environments where tasks areperformed by remote processing devices that are linked through acommunications network; however, some if not all aspects of the subjectdisclosure can be practiced on stand-alone computers. In a distributedcomputing environment, program modules can be located in both local andremote memory storage devices.

FIG. 14 illustrates a block diagram of a computing system 1400 operableto execute the disclosed systems and methods in accordance with anembodiment. Computer 1412, which can be, for example, part of thehardware of system 1420, includes a processing unit 1414, a systemmemory 1416, and a system bus 1418. System bus 1418 couples systemcomponents including, but not limited to, system memory 1416 toprocessing unit 1414. Processing unit 1414 can be any of variousavailable processors. Dual microprocessors and other multiprocessorarchitectures also can be employed as processing unit 1414.

System bus 1418 can be any of several types of bus structure(s)including a memory bus or a memory controller, a peripheral bus or anexternal bus, and/or a local bus using any variety of available busarchitectures including, but not limited to, Industrial StandardArchitecture (ISA), Micro-Channel Architecture (MSA), Extended ISA(EISA), Intelligent Drive Electronics, VESA Local Bus (VLB), PeripheralComponent Interconnect (PCI), Card Bus, Universal Serial Bus (USB),Advanced Graphics Port (AGP), Personal Computer Memory CardInternational Association bus (PCMCIA), Firewire (IEEE 1494), and SmallComputer Systems Interface (SCSI).

System memory 1416 can include volatile memory 1420 and nonvolatilememory 1422. A basic input/output system (BIOS), containing routines totransfer information between elements within computer 1412, such asduring start-up, can be stored in nonvolatile memory 1422. By way ofillustration, and not limitation, nonvolatile memory 1422 can includeROM, PROM, EPROM, EEPROM, or flash memory. Volatile memory 1420 includesRAM, which acts as external cache memory. By way of illustration and notlimitation, RAM is available in many forms such as SRAM, dynamic RAM(DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM),enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), Rambus direct RAM(RDRAM), direct Rambus dynamic RAM (DRDRAM), and Rambus dynamic RAM(RDRAM).

Computer 1412 can also include removable/non-removable,volatile/non-volatile computer storage media. FIG. 14 illustrates, forexample, disk storage 1424. Disk storage 1424 includes, but is notlimited to, devices like a magnetic disk drive, floppy disk drive, tapedrive, flash memory card, or memory stick. In addition, disk storage1424 can include storage media separately or in combination with otherstorage media including, but not limited to, an optical disk drive suchas a compact disk ROM device (CD-ROM), CD recordable drive (CD-R Drive),CD rewritable drive (CD-RW Drive) or a digital versatile disk ROM drive(DVD-ROM). To facilitate connection of the disk storage devices 1424 tosystem bus 1418, a removable or non-removable interface is typicallyused, such as interface 1426.

Computing devices typically include a variety of media, which caninclude computer-readable storage media or communications media, whichtwo terms are used herein differently from one another as follows.

Computer-readable storage media can be any available storage media thatcan be accessed by the computer and includes both volatile andnonvolatile media, removable and non-removable media. By way of example,and not limitation, computer-readable storage media can be implementedin connection with any method or technology for storage of informationsuch as computer-readable instructions, program modules, structureddata, or unstructured data. Computer-readable storage media can include,but are not limited to, random access memory (RAM), read only memory(ROM), electrically erasable programmable read only memory (EEPROM),flash memory or other memory technology, solid state drive (SSD) orother solid-state storage technology, compact disk read only memory (CDROM), digital versatile disk (DVD), Blu-ray disc or other optical diskstorage, magnetic cassettes, magnetic tape, magnetic disk storage orother magnetic storage devices or other tangible and/or non-transitorymedia which can be used to store desired information. In this regard,the terms “tangible” or “non-transitory” herein as applied to storage,memory or computer-readable media, are to be understood to exclude onlypropagating transitory signals per se as modifiers and do not relinquishrights to all standard storage, memory or computer-readable media thatare not only propagating transitory signals per se. In an aspect,tangible media can include non-transitory media wherein the term“non-transitory” herein as may be applied to storage, memory orcomputer-readable media, is to be understood to exclude only propagatingtransitory signals per se as a modifier and does not relinquish coverageof all standard storage, memory or computer-readable media that are notonly propagating transitory signals per se. For the avoidance of doubt,the term “computer-readable storage device” is used and defined hereinto exclude transitory media. Computer-readable storage media can beaccessed by one or more local or remote computing devices, e.g., viaaccess requests, queries or other data retrieval protocols, for avariety of operations with respect to the information stored by themedium.

Communications media typically embody computer-readable instructions,data structures, program modules or other structured or unstructureddata in a data signal such as a modulated data signal, e.g., a carrierwave or other transport mechanism, and includes any information deliveryor transport media. The term “modulated data signal” or signals refersto a signal that has one or more of its characteristics set or changedin such a manner as to encode information in one or more signals. By wayof example, and not limitation, communication media include wired media,such as a wired network or direct-wired connection, and wireless mediasuch as acoustic, RF, infrared and other wireless media.

It can be noted that FIG. 14 describes software that acts as anintermediary between users and computer resources described in suitableoperating environment 1400. Such software includes an operating system1428. Operating system 1428, which can be stored on disk storage 1424,acts to control and allocate resources of computer system 1412. Systemapplications 1430 take advantage of the management of resources byoperating system 1428 through program modules 1432 and program data 1434stored either in system memory 1416 or on disk storage 1424. It is to benoted that the disclosed subject matter can be implemented with variousoperating systems or combinations of operating systems.

A user can enter commands or information into computer 1412 throughinput device(s) 1436. As an example, a mobile device and/or portabledevice can include a user interface embodied in a touch sensitivedisplay panel allowing a user to interact with computer 1412. Inputdevices 1436 include, but are not limited to, a pointing device such asa mouse, trackball, stylus, touch pad, keyboard, microphone, joystick,game pad, satellite dish, scanner, TV tuner card, digital camera,digital video camera, web camera, cell phone, smartphone, tabletcomputer, etc. These and other input devices connect to processing unit1414 through system bus 1418 by way of interface port(s) 1438. Interfaceport(s) 1438 include, for example, a serial port, a parallel port, agame port, a universal serial bus (USB), an infrared port, a Bluetoothport, an IP port, or a logical port associated with a wireless service,etc. Output device(s) 1440 and a move use some of the same type of portsas input device(s) 1436.

Thus, for example, a USB port can be used to provide input to computer1412 and to output information from computer 1412 to an output device1440. Output adapter 1442 is provided to illustrate that there are someoutput devices 1440 like monitors, speakers, and printers, among otheroutput devices 1440, which use special adapters. Output adapters 1442include, by way of illustration and not limitation, video and soundcards that provide means of connection between output device 1440 andsystem bus 1418. It should be noted that other devices and/or systems ofdevices provide both input and output capabilities such as remotecomputer(s) 1444.

Computer 1412 can operate in a networked environment using logicalconnections to one or more remote computers, such as remote computer(s)1444. Remote computer(s) 1444 can be a personal computer, a server, arouter, a network PC, cloud storage, cloud service, a workstation, amicroprocessor based appliance, a peer device, or other common networknode and the like, and typically includes many or all of the elementsdescribed relative to computer 1412.

For purposes of brevity, only a memory storage device 1446 isillustrated with remote computer(s) 1444. Remote computer(s) 1444 islogically connected to computer 1412 through a network interface 1448and then physically connected by way of communication connection 1450.Network interface 1448 encompasses wire and/or wireless communicationnetworks such as local-area networks (LAN) and wide-area networks (WAN).LAN technologies include Fiber Distributed Data Interface (FDDI), CopperDistributed Data Interface (CDDI), Ethernet, Token Ring and the like.WAN technologies include, but are not limited to, point-to-point links,circuit-switching networks like Integrated Services Digital Networks(ISDN) and variations thereon, packet switching networks, and DigitalSubscriber Lines (DSL). As noted below, wireless technologies may beused in addition to or in place of the foregoing.

Communication connection(s) 1450 refer(s) to hardware/software employedto connect network interface 1448 to bus 1418. While communicationconnection 1450 is shown for illustrative clarity inside computer 1412,it can also be external to computer 1412. The hardware/software forconnection to network interface 1448 can include, for example, internaland external technologies such as modems, including regular telephonegrade modems, cable modems and DSL modems, ISDN adapters, and Ethernetcards.

The above description of illustrated embodiments of the subjectdisclosure, including what is described in the Abstract, is not intendedto be exhaustive or to limit the disclosed embodiments to the preciseforms disclosed. While specific embodiments and examples are describedherein for illustrative purposes, various modifications are possiblethat are considered within the scope of such embodiments and examples,as those skilled in the relevant art can recognize.

In this regard, while the disclosed subject matter has been described inconnection with various embodiments and corresponding Figures, whereapplicable, it is to be understood that other similar embodiments can beused or modifications and additions can be made to the describedembodiments for performing the same, similar, alternative, or substitutefunction of the disclosed subject matter without deviating therefrom.Therefore, the disclosed subject matter should not be limited to anysingle embodiment described herein, but rather should be construed inbreadth and scope in accordance with the appended claims below.

As it employed in the subject specification, the term “processor” canrefer to substantially any computing processing unit or devicecomprising, but not limited to comprising, single-core processors;single-processors with software multithread execution capability;multi-core processors; multi-core processors with software multithreadexecution capability; multi-core processors with hardware multithreadtechnology; parallel platforms; and parallel platforms with distributedshared memory. Additionally, a processor can refer to an integratedcircuit, an application specific integrated circuit (ASIC), a digitalsignal processor (DSP), a field programmable gate array (FPGA), aprogrammable logic controller (PLC), a complex programmable logic device(CPLD), a discrete gate or transistor logic, discrete hardwarecomponents, or any combination thereof designed to perform the functionsdescribed herein. Processors can exploit nano-scale architectures suchas, but not limited to, molecular and quantum-dot based transistors,switches and gates, in order to optimize space usage or enhanceperformance of user equipment. A processor may also be implemented as acombination of computing processing units.

In the subject specification, terms such as “store,” “storage,” “datastore,” data storage,” “database,” and substantially any otherinformation storage component relevant to operation and functionality ofa component, refer to “memory components,” or entities embodied in a“memory” or components comprising the memory. It will be appreciatedthat the memory components described herein can be either volatilememory or nonvolatile memory, or can include both volatile andnonvolatile memory.

As used in this application, the terms “component,” “system,”“platform,” “layer,” “selector,” “interface,” and the like are intendedto refer to a computer-related entity or an entity related to anoperational apparatus with one or more specific functionalities, whereinthe entity can be either hardware, a combination of hardware andsoftware, software, or software in execution. As an example, a componentmay be, but is not limited to being, a process running on a processor, aprocessor, an object, an executable, a thread of execution, a program,and/or a computer. By way of illustration and not limitation, both anapplication running on a server and the server can be a component. Oneor more components may reside within a process and/or thread ofexecution and a component may be localized on one computer and/ordistributed between two or more computers. In addition, these componentscan execute from various computer readable media, device readablestorage devices, or machine readable media having various datastructures stored thereon. The components may communicate via localand/or remote processes such as in accordance with a signal having oneor more data packets (e.g., data from one component interacting withanother component in a local system, distributed system, and/or across anetwork such as the Internet with other systems via the signal). Asanother example, a component can be an apparatus with specificfunctionality provided by mechanical parts operated by electric orelectronic circuitry, which is operated by a software or firmwareapplication executed by a processor, wherein the processor can beinternal or external to the apparatus and executes at least a part ofthe software or firmware application. As yet another example, acomponent can be an apparatus that provides specific functionalitythrough electronic components without mechanical parts, the electroniccomponents can include a processor therein to execute software orfirmware that confers at least in part the functionality of theelectronic components.

In addition, the term “or” is intended to mean an inclusive “or” ratherthan an exclusive “or.” That is, unless specified otherwise, or clearfrom context, “X employs A or B” is intended to mean any of the naturalinclusive permutations. That is, if X employs A; X employs B; or Xemploys both A and B, then “X employs A or B” is satisfied under any ofthe foregoing instances. Moreover, articles “a” and “an” as used in thesubject specification and annexed drawings should generally be construedto mean “one or more” unless specified otherwise or clear from contextto be directed to a singular form.

Moreover, terms like “user equipment (UE),” “mobile station,” “mobile,”subscriber station,” “subscriber equipment,” “access terminal,”“terminal,” “handset,” and similar terminology, refer to a wirelessdevice utilized by a subscriber or user of a wireless communicationservice to receive or convey data, control, voice, video, sound, gaming,or substantially any data-stream or signaling-stream. The foregoingterms are utilized interchangeably in the subject specification andrelated drawings. Likewise, the terms “access point (AP),” “basestation,” “NodeB,” “evolved Node B (eNodeB),” “home Node B (HNB),” “homeaccess point (HAP),” “cell device,” “sector,” “cell,” and the like, areutilized interchangeably in the subject application, and refer to awireless network component or appliance that serves and receives data,control, voice, video, sound, gaming, or substantially any data-streamor signaling-stream to and from a set of subscriber stations or providerenabled devices. Data and signaling streams can include packetized orframe-based flows.

Additionally, the terms “core-network”, “core”, “core carrier network”,“carrier-side”, or similar terms can refer to components of atelecommunications network that typically provides some or all ofaggregation, authentication, call control and switching, charging,service invocation, or gateways. Aggregation can refer to the highestlevel of aggregation in a service provider network wherein the nextlevel in the hierarchy under the core nodes is the distribution networksand then the edge networks. UEs do not normally connect directly to thecore networks of a large service provider but can be routed to the coreby way of a switch or radio area network. Authentication can refer todeterminations regarding whether the user requesting a service from thetelecom network is authorized to do so within this network or not. Callcontrol and switching can refer determinations related to the futurecourse of a call stream across carrier equipment based on the callsignal processing. Charging can be related to the collation andprocessing of charging data generated by various network nodes. Twocommon types of charging mechanisms found in present day networks can beprepaid charging and postpaid charging. Service invocation can occurbased on some explicit action (e.g. call transfer) or implicitly (e.g.,call waiting). It is to be noted that service “execution” may or may notbe a core network functionality as third party network/nodes may takepart in actual service execution. A gateway can be present in the corenetwork to access other networks. Gateway functionality can be dependenton the type of the interface with another network.

Furthermore, the terms “user,” “subscriber,” “customer,” “consumer,”“prosumer,” “agent,” and the like are employed interchangeablythroughout the subject specification, unless context warrants particulardistinction(s) among the terms. It should be appreciated that such termscan refer to human entities or automated components (e.g., supportedthrough artificial intelligence, as through a capacity to makeinferences based on complex mathematical formalisms), that can providesimulated vision, sound recognition and so forth.

Aspects, features, or advantages of the subject matter can be exploitedin substantially any, or any, wired, broadcast, wirelesstelecommunication, radio technology or network, or combinations thereof.Non-limiting examples of such technologies or networks include Geocasttechnology; broadcast technologies (e.g., sub-Hz, ELF, VLF, LF, MF, HF,VHF, UHF, SHF, THz broadcasts, etc.); Ethernet; X.25; powerline-typenetworking (e.g., PowerLine AV Ethernet, etc.); femto-cell technology;Wi-Fi; Worldwide Interoperability for Microwave Access (WiMAX); EnhancedGeneral Packet Radio Service (Enhanced GPRS); Third GenerationPartnership Project (3GPP or 3G) Long Term Evolution (LTE); 3GPPUniversal Mobile Telecommunications System (UMTS) or 3GPP UMTS; ThirdGeneration Partnership Project 2 (3GPP2) Ultra Mobile Broadband (UMB);High Speed Packet Access (HSPA); High Speed Downlink Packet Access(HSDPA); High Speed Uplink Packet Access (HSUPA); GSM Enhanced DataRates for GSM Evolution (EDGE) Radio Access Network (RAN) or GERAN; UMTSTerrestrial Radio Access Network (UTRAN); or LTE Advanced.

What has been described above includes examples of systems and methodsillustrative of the disclosed subject matter. It is, of course, notpossible to describe every combination of components or methods herein.One of ordinary skill in the art may recognize that many furthercombinations and permutations of the disclosure are possible.Furthermore, to the extent that the terms “includes,” “has,”“possesses,” and the like are used in the detailed description, claims,appendices and drawings such terms are intended to be inclusive in amanner similar to the term “comprising” as “comprising” is interpretedwhen employed as a transitional word in a claim.

While the various embodiments are susceptible to various modificationsand alternative constructions, certain illustrated implementationsthereof are shown in the drawings and have been described above indetail. It should be understood, however, that there is no intention tolimit the various embodiments to the specific forms disclosed, but onthe contrary, the intention is to cover all modifications, alternativeconstructions, and equivalents falling within the spirit and scope ofthe various embodiments.

In addition to the various implementations described herein, it is to beunderstood that other similar implementations can be used ormodifications and additions can be made to the describedimplementation(s) for performing the same or equivalent function of thecorresponding implementation(s) without deviating therefrom. Stillfurther, multiple processing chips or multiple devices can share theperformance of one or more functions described herein, and similarly,storage can be effected across a plurality of devices. Accordingly, thevarious embodiments are not to be limited to any single implementation,but rather is to be construed in breadth, spirit and scope in accordancewith the appended claims.

What is claimed is:
 1. A method, comprising: based on a precoder matrix,determining, by a wireless network device comprising a processor, achannel coefficient associated with a linear combination; in response tothe determining, mapping, by the wireless network device, a port,associated with a channel state data reference signal, to a co-polarizedelement of the precoder matrix; and based on an estimated signalattribute associated with an uplink reference signal associated with achannel, compressing, by the wireless network device, the channelcoefficient for a channel state data transmission and a data trafficchannel transmission.
 2. The method of claim 1, wherein the estimatedsignal attribute is representative of at least a signalinterference-to-noise ratio associated with a mobile device.
 3. Themethod of claim 1, wherein the compressing is based on a signalinterference-to-noise ratio of a mobile device.
 4. The method of claim1, further comprising: receiving, by the wireless network device, theuplink reference signal associated with the channel.
 5. The method ofclaim 1, wherein the precoder matrix is equal to a unit vectorassociated with the wireless network device.
 6. The method of claim 1,wherein the estimated signal attribute comprises a path loss valuerepresentative of a path loss associated with a mobile device.
 7. Themethod of claim 1, further comprising: based on the channel coefficientand the mapping of the port, estimating, by the wireless network device,a signal attribute associated with the uplink reference signal,resulting in the estimated signal attribute.
 8. The method of claim 1,further comprising: based on a path loss value associated with themobile device, assigning, by the wireless network device, a value to amobile device.
 9. A system, comprising: a processor; and a memory thatstores executable instructions that, when executed by the processor,facilitate performance of operations, comprising: mapping a port for achannel state data reference signal to a co-polarized element of aprecoder matrix equal to a unit vector; determining a channelcoefficient associated with a channel utilized by a mobile device; inresponse to the determining the channel coefficient and the mapping ofthe port, estimating a signal attribute associated with an uplinkreference signal associated with the channel; and based on a result ofthe estimating, compressing the channel coefficient, resulting in acompressed channel coefficient for a channel state data transmission.10. The system of claim 9, wherein the signal attribute is a signalinterference-to-noise ratio associated with the mobile device.
 11. Thesystem of claim 9, wherein the operations further comprise: based on amagnitude of a signal interference-to-noise ratio, partitioning a valueassociated with the signal interference-to-noise ratio into partitions.12. The system of claim 9, wherein the operations further comprise:based on a characteristic of the channel, generating the precoder matrixequal to the unit vector.
 13. The system of claim 9, wherein theoperations further comprise: receiving the uplink reference signalassociated with the channel and the mobile device.
 14. The system ofclaim 9, wherein the signal attribute is a path loss value associatedwith a path loss applicable to communication with the mobile device. 15.A machine-readable medium, comprising executable instructions that, whenexecuted by a processor, facilitate performance of operations,comprising: using a precoder matrix that is equal to a unit vector,determining a channel coefficient associated with a linear combinationof a basis vector; in response to the determining, mapping a port of achannel state data reference signal to a co-polarized element of theprecoder matrix; and based on an estimated signal attribute associatedwith an uplink reference signal, compressing the channel coefficient,resulting in a compressed channel coefficient for a channel state datatransmission.
 16. The machine-readable medium of claim 15, wherein theoperations further comprise: based on a characteristic associated with achannel, generating the precoder matrix.
 17. The machine-readable mediumof claim 16, wherein the generating the precoder matrix is based on theuplink reference signal associated with the compressed channelcoefficient.
 18. The machine-readable medium of claim 15, wherein theoperations further comprise: facilitating a reconstruction of theprecoder matrix.
 19. The machine-readable medium of claim 15, whereinthe operations further comprise: estimating a signal attributeassociated with the uplink reference signal, resulting in the estimatedsignal attribute.
 20. The machine-readable medium of claim 19, whereinthe estimating the signal attribute associated with the uplink referencesignal is based on a result of using the channel coefficient.